CN216053092U - Electronic wallet circuit and electronic wallet - Google Patents
Electronic wallet circuit and electronic wallet Download PDFInfo
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- CN216053092U CN216053092U CN202121790107.2U CN202121790107U CN216053092U CN 216053092 U CN216053092 U CN 216053092U CN 202121790107 U CN202121790107 U CN 202121790107U CN 216053092 U CN216053092 U CN 216053092U
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Abstract
The application discloses electronic wallet circuit and electronic wallet, the electronic wallet circuit includes: the NFC starting circuit comprises a control module, a power switch circuit, an NFC starting circuit, a key circuit and an NFC antenna; the NFC power-on circuit is configured to output a trigger signal after receiving the induction voltage output by the NFC antenna; the power switch circuit is configured to be switched on and output working voltage after receiving the trigger signal output by the NFC starting circuit or the key circuit, so as to supply power to the electronic wallet circuit; the control module is configured to output a switch control signal to the power switch circuit after monitoring that the power switch circuit receives the trigger signal, wherein the switch control signal is used for controlling the power switch circuit to be continuously conducted and continuously supplying power to the electronic wallet circuit.
Description
Technical Field
The application belongs to the technical field of electronic purses, and particularly relates to an electronic purse circuit and an electronic purse.
Background
NFC (near Field communication) is an emerging communication technology, and is widely applied to various scenes requiring identification and verification, such as mobile payment and electronic pass, due to its high security and high compatibility, and an NFC electronic wallet device is created.
At present, an existing NFC electronic wallet is generally used as a device for performing operations such as payment in cooperation with an external card reading terminal, and generally, such a device has a single power-on mode and low reliability, so that a user has problems of slow power-on speed and inconvenient operation when using the device.
SUMMERY OF THE UTILITY MODEL
The application aims to provide an electronic wallet circuit and an electronic wallet, and aims to solve the problem that the starting mode of the traditional electronic wallet is single.
A first aspect of embodiments of the present application provides an electronic wallet circuit, comprising: the NFC starting circuit comprises a control module, a power switch circuit, an NFC starting circuit, a key circuit and an NFC antenna; the NFC antenna is connected with the NFC starting-up circuit, and the NFC starting-up circuit is configured to receive the induction voltage output by the NFC antenna and then output a trigger signal; the input trigger end of the power switch circuit is respectively connected with the NFC starting circuit and the key circuit, and the power switch circuit is configured to be switched on and output working voltage after receiving the trigger signal output by the NFC starting circuit or the key circuit, so as to supply power to the electronic wallet circuit; the control module is connected with an input trigger end of the power switch circuit, and is configured to output a switch control signal to the power switch circuit after monitoring that the power switch circuit receives the trigger signal, wherein the switch control signal is used for controlling the power switch circuit to be continuously conducted and continuously supplying power to the electronic wallet circuit.
Compared with the prior art, the embodiment of the application has the advantages that: because the electronic wallet circuit is started by the aid of two modes of key starting and NFC induction starting, a user can select a proper starting mode according to specific conditions, and use experience of the user can be effectively improved.
In one embodiment, the NFC starting-up circuit includes a first switching tube, and the NFC antenna is connected to a control end of the first switching tube through a rectifying circuit; the first conduction end of the first switch tube is connected with the input trigger end of the power switch circuit, the second conduction end of the first switch tube is grounded, and the first switch tube is used for conducting when the control end of the first switch tube receives the induction voltage so as to output the trigger signal to the input trigger end of the power switch circuit.
In one embodiment, the NFC starting-up circuit further includes a second switching tube, and the NFC antenna is connected to a control end of the second switching tube through a rectifying circuit; the first conduction end of the second switch tube is connected with the first awakening end of the control module, the second conduction end of the second switch tube is grounded, and the second switch tube is used for conducting when the control end of the second switch tube receives the induction voltage so as to output the trigger signal to the control module.
In one embodiment, the energy storage device further comprises an energy storage module and a voltage stabilizing circuit, and the power switching circuit comprises a third switching tube and a fourth switching tube; the control end of the third switch tube is used as the input trigger end, the input trigger end is connected with the output end of the energy storage module through a first divider resistor, the input trigger end is connected with the second awakening end of the control module through a second divider resistor so as to be used for monitoring the trigger signal by the second awakening end, the first conducting end of the third switch tube is connected with the output end of the energy storage module, the second conducting end of the third switch tube is connected with the input end of the voltage stabilizing circuit, and the power switch circuit is used for controlling the output of electric energy in the energy storage module and outputting stable working voltage through the voltage stabilizing circuit; the first conducting end of the fourth switch tube is connected with the control end of the third switch tube, the control end of the fourth switch tube is connected with the locking end of the control module to receive the switch control signal, and the second conducting end of the fourth switch tube is grounded.
In one embodiment, the key circuit includes a start switch, one end of the start switch is grounded, and the other end of the start switch is connected to the control end of the third switch tube through the second voltage-dividing resistor.
In one embodiment, the control module is further configured to, when the power switch circuit is controlled to be continuously turned on and the control module monitors the trigger signal sent by the key circuit, change the switch control signal output by the lock terminal to a low level for turning off the power switch circuit.
In one embodiment, the method further comprises the following steps: the wallet module is used for exchanging data with external wireless equipment through the NFC antenna; the card reading module is used for reading data of an external NFC card through the NFC antenna; a line change circuit connected with the NFC antenna, the wallet module and the card reading module respectively, the line change circuit being configured to connect the NFC antenna with the wallet module or the card reading module under control of a line change control signal for switching the electronic wallet circuit between a wallet mode and a card reading mode; and the line changing control end of the control module is connected with the input end of the line changing circuit and is used for outputting the line changing control signal to the input end of the line changing circuit.
Compared with the prior art, the embodiment of the application has the advantages that: the NFC antenna can be switched to be connected with the wallet module or the card reading module through the radio frequency switch, and the function switching of the electronic wallet is achieved.
In one embodiment, the line changing circuit comprises a radio frequency switch and a switching control circuit; a public connecting end of the radio frequency switch is connected with the NFC antenna, a first functional end of the radio frequency switch is connected with the wallet module, and a second functional end of the radio frequency switch is connected with the card reading module; the line-changing control end of the control module is respectively connected with the second control end of the radio frequency switch and the input end of the switching control circuit, the output end of the switching control circuit is connected with the first control end of the radio frequency switch, and the switching control circuit is used for matching the control module to synchronously adjust the voltage of the first control end and the second control end of the radio frequency switch under the control of a line-changing control signal so as to communicate the common connecting end of the radio frequency switch with the first functional end or the second functional end.
Compared with the prior art, the embodiment of the application has the advantages that: the control module can simultaneously control the first control end and the second control end of the radio frequency switch through only one line-changing control end through the switching control circuit.
In one embodiment, the switching control circuit includes a fifth switching tube and a pull-up resistor, a control end of the fifth switching tube is used as an input end of the switching control circuit, a first conducting end of the fifth switching tube is used as an output end of the switching control circuit and is connected to a working voltage through the pull-up resistor, and a second conducting end of the fifth switching tube is grounded.
A second aspect of embodiments of the present application provides an electronic wallet comprising an electronic wallet circuitry as described above.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present application;
fig. 2 is a schematic diagram of an NFC boot circuit according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a power switch circuit according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a line-changing circuit according to an embodiment of the present application;
fig. 5 is a schematic diagram of a line-changing circuit according to another embodiment of the present application.
Reference numerals: 10. a control module; 20. a power switching circuit; 30. an NFC power-on circuit; 40. a key circuit; 50. an NFC antenna; 60. a rectifying circuit; 70. an energy storage module; 80. a voltage stabilizing circuit; 90. a wallet module; 100. a card reading module; 110. a line changing circuit; 120. a display screen.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
The embodiment of the application relates to an electronic wallet circuit, as shown in fig. 1, the electronic wallet circuit comprises: an electronic wallet circuit comprising: the NFC starting circuit comprises a control module 10, a power switch circuit 20, an NFC starting circuit 30, a key circuit 40, an NFC antenna 50 and a rectifying circuit 60; the control module 10 may be a microcontroller, such as a single chip Microcomputer (MCU); the NFC antenna 50 is connected to the NFC starting-up circuit 30 through the rectifying circuit 60, and the induced voltage generated by the NFC antenna 50 can be identified by the NFC starting-up circuit 30 only after being rectified and stabilized in the rectifying circuit 60; the NFC power-on circuit 30 receives the induced voltage output by the NFC antenna 50 and outputs a trigger signal.
An input trigger end MOSG of the power switch circuit 20 is respectively connected with the NFC starting-up circuit 30 and the key circuit 40, and after the power switch circuit 20 receives a trigger signal output by the NFC starting-up circuit 30 or the key circuit 40, the power switch circuit 20 is turned on and outputs a working voltage VCC to supply power to the electronic wallet circuit; the control module 10 is connected to the input trigger terminal MOSG of the power switch circuit 20, the control module 10 is configured to monitor a trigger signal output from the NFC power-on circuit 30 or the key circuit 40 to the power switch circuit 20, and when the power switch circuit 20 is turned on to power up the control module 10 and the control module 10 monitors the trigger signal, the control module 10 outputs a switch control signal to the power switch circuit 20, where the switch control signal is used to control the power switch circuit 20 to be turned on to continuously supply power to the electronic wallet circuit.
Wherein, the power switch circuit 20 is used for controlling the working voltage VCC of the whole electronic wallet circuit, and when the power switch circuit 20 is turned on, the power switch circuit 20 supplies power to the electronic wallet circuit; meanwhile, the button starting mode and the NFC induction starting mode are adopted, the use experience of a user can be greatly improved, and the user can select one mode to complete quick starting according to actual conditions.
It is understood that the trigger signal generated by the NFC power-on circuit 30 or the key circuit 40 is used to enable the electronic wallet circuit to start up, and the switch control signal is used to keep the power switch circuit 20 on after the electronic wallet circuit is successfully powered on, so that the power switch circuit 20 can generate the operating voltage VCC using the power of the power storage module connected to the power switch circuit 20.
As shown in fig. 1 and fig. 2, in one embodiment, the NFC starting-up circuit 30 includes a first switch Q1 and a second switch Q2, the first switch Q1 and the second switch Q2 may be NMOS transistors, control terminals of the first switch Q1 and the second switch Q2 are gates, first conducting terminals of the first switch Q1 and the second switch Q2 are drains, and second conducting terminals of the first switch Q1 and the second switch Q2 are sources; an output end NFCVCC of the rectifying circuit 60 is connected to control ends of the first switching tube Q1 and the second switching tube Q2 respectively; a first conduction end of the first switch tube Q1 is connected to the input trigger end MOSG of the power switch circuit 20, so as to output a trigger signal to the power switch circuit 20; a first conduction end of the second switching tube Q2 is connected to the first WAKE-up end WAKE1 of the control module 10, so as to control the control module 10 to output a switching control signal; the second conducting terminals of the first switch tube Q1 and the second switch tube Q2 are both grounded. The trigger signal in this embodiment is a low level signal.
After the NFC antenna 50 outputs an induced current in an NFC field, the induced current is transmitted to the control ends of the first switching tube Q1 and the second switching tube Q2 through the rectifying circuit 60, so that the first switching tube Q1 and the second switching tube Q2 are conducted and respectively output a trigger signal to the output trigger segment MOSG and the first WAKE-up end WAKE1, and after the input trigger end MOSG receives the trigger signal, the control module 10 monitors the trigger signal and further outputs a switch control signal; the first WAKE-up terminal WAKE1 may also enable the control module 10 to directly output the switch control signal after receiving the trigger signal. Because the induced voltage output by the NFC antenna 50 is unstable, the NFC starting-up circuit 30 can enable the control module 10 to output the switch control signal through two ways, so as to implement NFC starting-up, and the success rate of starting up can be improved through two ways of starting up.
As shown in fig. 1, in one embodiment, the electronic wallet circuit further includes an energy storage module 70 and a regulator 80, where the energy storage module 70 may be a battery, and the regulator 80 may be a low dropout regulator (LDO) circuit.
The power switch circuit 20 comprises a third switch tube Q3 and a fourth switch tube Q4; the control electrode of the third switching tube Q3 is a gate, the first conducting end is a source electrode, and the second conducting end is a drain electrode; the control electrode of the fourth switching tube is a grid electrode, the first conduction end is a drain electrode, and the second conduction end is a source electrode; the control end of the third switching tube Q3 is used as an input trigger end MOSG, the input trigger end MOSG is connected to the first conduction end of the first switching tube Q1, the input trigger end MOSG is connected to the output end VBAT of the energy storage module 70 through a first voltage dividing resistor R1, the input trigger end MOSG is connected to the second WAKE-up end WAKE2 of the control module 10 through a second voltage dividing resistor R2 for the control module 10 to monitor a trigger signal, the first conduction end of the third switching tube Q3 is connected to the output end VBAT of the energy storage module 70, and the second conduction end of the third switching tube Q3 is connected to the input end VIN of the voltage regulator circuit 80; a first conducting terminal of the fourth switching tube Q4 is connected to a control terminal of the third switching tube Q3, a control terminal of the fourth switching tube Q4 is connected to a LOCK terminal LOCK of the control module 10 for receiving a switch control signal, and a second conducting terminal of the fourth switching tube Q4 is grounded. When the third switching tube Q3 is turned on, the power switching circuit 20 connects the energy storage module 70 with the voltage stabilizing circuit 80, so that the voltage stabilizing circuit 80 outputs a stable operating voltage VCC to drive the electronic wallet circuit to operate.
When the switch control signal is at a high level, the fourth switching tube is turned on, so that the third switching tube Q3 is turned on, and the LOCK terminal LOCK of the control module 10 continuously outputs the switch control signal at the high level, so that the power switch circuit 20 is continuously turned on, and the working state of the electronic wallet circuit is maintained.
As shown in fig. 3, in one embodiment, the power switch circuit 20 further includes a first diode D1, the first diode D1 is used for connecting the second WAKE-up terminal WAKE2 to the power switch circuit 20, an input terminal of the first diode D1 is connected to the second WAKE-up terminal WAKE2, and an output terminal of the first diode D1 is connected to a control terminal of the third switch Q3 through a second voltage-dividing resistor R2. The first diode D1 is used to prevent the second WAKE-up terminal WAKE2 of the control module 10 from being damaged by high voltage and high current.
In one embodiment, the key circuit 40 includes a start switch S1, the start switch S1 may be a push-to-trigger switch, one end of the start switch S1 is grounded, and the other end is connected to the control terminal of the third switch tube Q3 through a second voltage-dividing resistor R2. After the start switch S1 is pressed, the input trigger terminal MOSG receives the trigger signal.
In one embodiment, the control module 10 is further configured to boost the voltage of the second WAKE-up terminal WAKE2 through an internal boost resistor when the LOCK terminal LOCK continuously outputs a high level, and after the second WAKE-up terminal WAKE2 detects the trigger signal output by the key circuit 40, the second WAKE-up terminal WAKE2 changes from the high level to the low level, and the control module 10 changes the switch control signal output by the LOCK terminal LOCK to the low level, so as to finally turn off the power switch circuit 20. Since the second voltage dividing resistor is disposed between the second WAKE-up terminal WAKE2 and the control terminal of the third switch tube Q3, even if the control terminal of the third switch tube Q3 is at a low level when conducting, the second WAKE-up terminal WAKE2 will keep at a high level under the boosting of the internal boosting resistor, and only when the key circuit 40 (the start switch S1) outputs the trigger signal again, the second WAKE-up terminal WAKE2 will become at a low level, thereby turning off the electronic wallet.
As shown in fig. 1 and 4, in one embodiment, the electronic wallet circuit further includes: the wallet module 90 comprises a hardware wallet chip, and when the NFC antenna 50 is connected with the wallet module 90, the wallet module 90 can exchange data with an external wireless device through the NFC antenna 50 to complete operations such as inquiry, payment and collection; the card reading module 100, when the NFC antenna 50 is connected to the wallet module 90, the card reading module 100 can read data of an external NFC card through the NFC antenna 50; the line changing circuit 110, the line changing circuit 110 is respectively connected with the NFC antenna 50, the wallet module 90 and the card reading module 100, and the line changing circuit 110 is configured to connect the NFC antenna 50 with the wallet module 90 or the card reading module 100 under the control of a line changing control signal, so as to switch the electronic wallet circuit between the wallet mode and the card reading mode.
The line-changing control terminal of the control module 10 is connected to the input terminal of the line-changing circuit 110, so that the control module 10 outputs a line-changing control signal to the input terminal of the line-changing circuit 110.
As shown in fig. 4, in one embodiment, the line changing circuit 110 includes a radio frequency switch U1 and a switching control circuit; a common connection end RFC1 of the radio frequency switch U1 is connected with the NFC antenna 50, a first function end RF1 of the radio frequency switch U1 is connected with the wallet module 90, and a second function end RF2 of the radio frequency switch U1 is connected with the card reading module 100; the line-changing control terminal of the control module 10 is connected to the second control terminal VC2 of the rf switch U1 and the input terminal of the switching control circuit, respectively, and the output terminal of the switching control circuit is connected to the first control terminal VC1 of the rf switch U1. The control module 10 controls the voltages of the first control terminal VC1 and the second control terminal VC2 of the radio frequency switch U1 at the same time by switching the control circuit, and the radio frequency switch U1 can select the common connection terminal RFC1 to communicate with the first function terminal RF1 or the second function terminal RF2 according to the voltages of the first control terminal VC1 and the second control terminal VC2, so that the NFC antenna 50 communicates with the wallet module 90 or the card reading module 100.
In one embodiment, after the electronic wallet circuit is powered on, the control module 10 controls the second control terminal VC2 to be at a low level and the first control terminal VC1 to be pulled high to be at a high level, the radio frequency switch U1 switches the common connection terminal RFC1 to the first functional terminal RF1, so that the NFC antenna 50 is communicated with the wallet module 90 through the radio frequency switch U1, and the wallet module 90 performs a function of an electronic wallet through the NFC antenna 50; when the control module 10 receives a switching request for switching functions, the second control terminal VC2 is controlled to be at a high level, the first control terminal VC1 is at a low level, the radio frequency switch U1 switches the common connection terminal RFC1 to the second function terminal RF2, and the NFC antenna 50 is communicated with the card reading module 100 through the radio frequency switch U1, so that function switching from the electronic wallet to the card reader is realized.
As shown in fig. 4, in one embodiment, the switching control circuit includes a fifth switch Q5, the fifth switch Q5 may be an NMOS transistor, the first conducting terminal of the fifth switch Q5 is a drain, the second conducting terminal is a source, and the control terminal is a gate; a control terminal of the fifth switch Q5 is connected to the wire-change control terminal of the control module 10 as an input terminal of the switching control circuit, a first conduction terminal of the fifth switch Q5 is connected to the output terminal of the switching control circuit, and a second conduction terminal of the fifth switch Q5 is connected to ground.
As shown in fig. 4, in an embodiment, the switching control circuit further includes a pull-up resistor R6, one end of the pull-up resistor R6 is connected to the first conducting terminal of the fifth switch Q5, and the other end is connected to the operating voltage VCC. And is used for boosting the voltage of the first conducting terminal of the fifth switching tube Q5 when the fifth switching tube Q5 is not conducted.
As shown in fig. 4, in an embodiment, the switching control circuit further includes a pull-down resistor R5, one end of the pull-down resistor R5 is connected to the control terminal of the fifth switching transistor Q5, and the other end is grounded. For rapidly reducing the voltage at the control terminal of the fifth switching tube Q5.
When the line change control terminal of the control module 10 outputs a low-level line change control signal to the line change circuit 110, the level of the second control terminal VC2 of the radio frequency switch U1 is pulled low, and the fifth switch tube Q5 is turned off, and the first control terminal VC1 of the radio frequency switch U1 becomes a high level, so that the common connection terminal RFC1 is connected to the first function terminal RF 1; when the wire-changing control terminal of the control module 10 outputs a high-level wire-changing control signal to the wire-changing circuit 110, the level of the second control terminal VC2 of the radio frequency switch U1 is pulled high, and the fifth switching tube Q5 is turned on, so that the first control terminal VC1 of the radio frequency switch U1 is grounded, and the connection between the common connection terminal RFC1 and the second function terminal RF2 is realized.
As shown in fig. 1, in one embodiment, the control module 10 is connected to the card reading module 100 for receiving the transaction data read by the card reading module 100 through the NFC antenna 50. The control module 10 is connected to the wallet module 90 for receiving transaction data transmitted by the wallet module 90 through the NFC antenna 50. The electronic wallet circuit further comprises a display screen 120, and the display screen 120 is connected to the control module 10 for displaying the transaction data received by the control module 10 for the user to operate.
As shown in fig. 5, in one embodiment, the switching control circuit further includes a second diode D2, a third diode D3, a third diode D3, a pull-up resistor R6 connected to the operating voltage VCC through the second diode D2, a positive electrode of the second diode D2 connected to the operating voltage VCC, and a negative electrode connected to the pull-up resistor R6; the anode of the third diode D3 is connected to the output terminal NFCVCC of the rectifying circuit 60, and the cathode is connected to the cathode of the second diode D2, so that the switching control circuit can be driven by two power sources, and energy can be saved when the switching control circuit is driven by the rectifying circuit 60.
A second aspect of embodiments of the present application provides an electronic wallet comprising an electronic wallet circuitry as described above.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. Electronic wallet circuitry, comprising: the NFC starting circuit comprises a control module, a power switch circuit, an NFC starting circuit, a key circuit and an NFC antenna;
the NFC antenna is connected with the NFC starting-up circuit, and the NFC starting-up circuit is configured to receive the induction voltage output by the NFC antenna and then output a trigger signal;
the input trigger end of the power switch circuit is respectively connected with the NFC starting circuit and the key circuit, and the power switch circuit is configured to be switched on and output working voltage after receiving the trigger signal output by the NFC starting circuit or the key circuit, so as to supply power to the electronic wallet circuit;
the control module is connected with an input trigger end of the power switch circuit, and is configured to output a switch control signal to the power switch circuit after monitoring that the power switch circuit receives the trigger signal, wherein the switch control signal is used for controlling the power switch circuit to be continuously conducted and continuously supplying power to the electronic wallet circuit.
2. The electronic wallet circuit of claim 1, wherein the NFC power-on circuit comprises a first switching tube, and the NFC antenna is connected to a control terminal of the first switching tube through a rectifying circuit;
the first conduction end of the first switch tube is connected with the input trigger end of the power switch circuit, the second conduction end of the first switch tube is grounded, and the first switch tube is used for conducting when the control end of the first switch tube receives the induction voltage so as to output the trigger signal to the input trigger end of the power switch circuit.
3. The electronic wallet circuit of claim 2, wherein the NFC power-on circuit further comprises a second switching tube, and the NFC antenna is connected to a control terminal of the second switching tube through a rectifying circuit;
the first conduction end of the second switch tube is connected with the first awakening end of the control module, the second conduction end of the second switch tube is grounded, and the second switch tube is used for conducting when the control end of the second switch tube receives the induction voltage so as to output the trigger signal to the control module.
4. The electronic wallet circuit of claim 2 or claim 3, further comprising an energy storage module and a voltage regulation circuit, the power switching circuit comprising a third switching transistor and a fourth switching transistor;
the control end of the third switch tube is used as the input trigger end, the input trigger end is connected with the output end of the energy storage module through a first divider resistor, the input trigger end is connected with the second awakening end of the control module through a second divider resistor so as to be used for monitoring the trigger signal by the second awakening end, the first conducting end of the third switch tube is connected with the output end of the energy storage module, the second conducting end of the third switch tube is connected with the input end of the voltage stabilizing circuit, and the power switch circuit is used for controlling the output of electric energy in the energy storage module and outputting stable working voltage through the voltage stabilizing circuit;
the first conducting end of the fourth switch tube is connected with the control end of the third switch tube, the control end of the fourth switch tube is connected with the locking end of the control module to receive the switch control signal, and the second conducting end of the fourth switch tube is grounded.
5. The electronic wallet circuit of claim 4, wherein the key circuit comprises an activation switch, one end of the activation switch is connected to ground, and the other end of the activation switch is connected to the control terminal of the third switch tube through the second voltage-dividing resistor.
6. The electronic wallet circuit of claim 5, wherein the control module is further configured to change the switch control signal output by the lock terminal to a low level for turning off the power switch circuit when the power switch circuit is controlled to be continuously turned on and the control module monitors the trigger signal sent by the key circuit.
7. An electronic wallet circuit as claimed in any one of claims 1 to 3, further comprising:
the wallet module is used for exchanging data with external wireless equipment through the NFC antenna;
the card reading module is used for reading data of an external NFC card through the NFC antenna;
a line change circuit connected with the NFC antenna, the wallet module and the card reading module respectively, the line change circuit being configured to connect the NFC antenna with the wallet module or the card reading module under control of a line change control signal for switching the electronic wallet circuit between a wallet mode and a card reading mode;
and the line changing control end of the control module is connected with the input end of the line changing circuit and is used for outputting the line changing control signal to the input end of the line changing circuit.
8. The electronic wallet circuit of claim 7, wherein the wire swapping circuit comprises a radio frequency switch and a switching control circuit;
a public connecting end of the radio frequency switch is connected with the NFC antenna, a first functional end of the radio frequency switch is connected with the wallet module, and a second functional end of the radio frequency switch is connected with the card reading module;
the line-changing control end of the control module is respectively connected with the second control end of the radio frequency switch and the input end of the switching control circuit, the output end of the switching control circuit is connected with the first control end of the radio frequency switch, and the switching control circuit is used for matching the control module to synchronously adjust the voltage of the first control end and the second control end of the radio frequency switch under the control of a line-changing control signal so as to communicate the common connecting end of the radio frequency switch with the first functional end or the second functional end.
9. The electronic wallet circuit of claim 8, wherein the switching control circuit comprises a fifth switch tube and a pull-up resistor, a control terminal of the fifth switch tube is used as an input terminal of the switching control circuit, a first conducting terminal of the fifth switch tube is used as an output terminal of the switching control circuit and is connected with an operating voltage through the pull-up resistor, and a second conducting terminal of the fifth switch tube is grounded.
10. Electronic wallet, characterized in that it comprises an electronic wallet circuit as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121790107.2U CN216053092U (en) | 2021-08-02 | 2021-08-02 | Electronic wallet circuit and electronic wallet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121790107.2U CN216053092U (en) | 2021-08-02 | 2021-08-02 | Electronic wallet circuit and electronic wallet |
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| CN216053092U true CN216053092U (en) | 2022-03-15 |
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| CN202121790107.2U Active CN216053092U (en) | 2021-08-02 | 2021-08-02 | Electronic wallet circuit and electronic wallet |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115016625A (en) * | 2022-05-31 | 2022-09-06 | 维沃移动通信有限公司 | Electronic equipment control method, electronic equipment and electronic equipment set |
| WO2023226932A1 (en) * | 2022-05-27 | 2023-11-30 | 维沃移动通信有限公司 | Electronic device and electronic device set |
-
2021
- 2021-08-02 CN CN202121790107.2U patent/CN216053092U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023226932A1 (en) * | 2022-05-27 | 2023-11-30 | 维沃移动通信有限公司 | Electronic device and electronic device set |
| CN115016625A (en) * | 2022-05-31 | 2022-09-06 | 维沃移动通信有限公司 | Electronic equipment control method, electronic equipment and electronic equipment set |
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